#include "OgreMaxConfig.h"
#include <fstream>

namespace OgreMax {

	Config::Config() {
		// set defaults
		m_exportSelectedObjects = false;	// default to exporting everything in the scene
		m_exportMultipleFiles = true;		// default is to export a file per mesh object in the scene
		m_useSingleSkeleton = true;			// default for multiple meshes is to reference a single .skeleton file where applicable
		m_rebuildNormals = false;			// rebuild the normals before exporting mesh data

		m_exportMaterial = true;			// default is to export material scripts
		m_defaultMaterialName = "DefaultMaterial";
		m_2DTexCoord = UV;					// default is UV interpretation of 2D tex coords

		m_invertNormals = false;			// flip normals; will also reorder triangle vertex indices
		m_flipYZ = false;					// swap X and Z axes, so that Y becomes the One True Up Vector
		m_exportVertexColors = false;		// useful for vertex painting
		m_scale = 1.0f;						// export at normal size (scale) -- all vertices get multiplied by this

		m_exportSkeleton = false;			// initially we don't assume any skeletal data

		m_fps = 25.0;						// used for controller types (such as Biped) that do not support keyframes directly -- this is the sampling rate

		m_exportBinaryMesh = false;
		m_exportXMLMesh = true;

		m_generateTangents = false;
		m_edgeLists = true;
		m_generateLod = false;
		m_lodDistance = 0.0f;
		m_numLodLevels = 0;
		m_lodPercent = -1.0f;
		m_lodVertexCount = -1;
		m_endian = NATIVE;					// let Ogre figure it out
		m_colourFormat = DIRECT3D;			// we can default to this since Max only runs on Windows
		m_optimizeBinaryLayout = true;		// why wouldn't we? ;)

		// version 2
		m_mergeMeshes = false;
	}

	Config::Config(const Config& config)
	{
		*this = config;
	}

	Config& Config::operator=(const Config& rhs)
	{
		m_generateTangents = rhs.m_generateTangents;
		m_edgeLists = rhs.m_edgeLists;
		m_generateLod = rhs.m_generateLod;
		m_lodDistance = rhs.m_lodDistance;
		m_numLodLevels = rhs.m_numLodLevels;
		m_lodPercent = rhs.m_lodPercent;
		m_lodVertexCount = rhs.m_lodVertexCount;

		return *this;
	}

	Config::~Config()
	{
	}

	void Config::save() {
		// write "this" to file named <basename>.cfg; note that we do not need to do the same massaging of 
		// file sizes that we do for reads since this will always output the latest version
		std::ofstream of;
		std::string fname = m_exportBasename + ".cfg";

		// copy strings to buffers
		strcpy(m_bufDefaultMaterialName, m_defaultMaterialName.c_str());
		strcpy(m_bufExportPath, m_exportPath.c_str());
		strcpy(m_bufExportBasename, m_exportBasename.c_str());
		strcpy(m_bufExportFilename, m_exportFilename.c_str());
		strcpy(m_bufMaterialFilename, m_materialFilename.c_str());
		strcpy(m_bufSkeletonFilename, m_skeletonFilename.c_str());

		// set version number for sure
		m_version = CURRENTVERSION;

		of.open(fname.c_str(), std::ios::binary | std::ios::out);
		if (of.is_open()) {
			of.write((char *)this, offsetof(Config, m_defaultMaterialName));
			of.close();
		}
	}

	void Config::load() {
		// read "this" from file named <basename>.cfg
		std::ifstream f;
		std::string fname = m_exportBasename + ".cfg";

		f.open(fname.c_str(), std::ios::binary | std::ios::in);
		if (f.is_open()) {

			// we need to check the version to see how much to read
			f.read((char*)&m_version, sizeof(unsigned int));

			// default size for latest version
			size_t sz = offsetof(Config, m_defaultMaterialName);

			if (m_version < CURRENTVERSION) {
				switch(m_version) {
					case 1:
						sz = offsetof(Config, m_bufSkeletonFilename) + sizeof(m_bufSkeletonFilename);
						break;
					case 2:
						sz = offsetof(Config, m_mergeMeshes) + sizeof(m_mergeMeshes);
						break;
				}
			}

			// read the calculated size, minus the unsigned int we already read
			f.read(((char *)this + sizeof(unsigned int)), sz - sizeof(unsigned int));
			f.close();

			// make strings from buffers
			m_defaultMaterialName = m_bufDefaultMaterialName;
			m_exportPath = m_bufExportPath;
			m_exportBasename = m_bufExportBasename;
			m_exportFilename = m_bufExportFilename; 
			m_materialFilename = m_bufMaterialFilename;
			m_skeletonFilename = m_bufSkeletonFilename;
		}

		// if we could not open the config file for any reason, skip it -- more than likely a new export
	}

	void Config::setExportPath(const std::string& path) {
		m_exportPath = path;
	}

	void Config::setMaterialFilename(const std::string& name) {
		m_materialFilename = name;
	}

	void Config::setExportFilename(const std::string& name) {
		// extract the filename and the export path
		std::string filename = name;
		size_t offset = filename.find_last_of('\\');
		m_exportPath = filename.substr(0, offset);
		m_exportFilename = filename.substr(offset+1);

		// strip extension, if any
		offset = m_exportFilename.find_last_of('.');
		if (m_exportFilename.substr(offset) == ".xml")
			offset = m_exportFilename.substr(0, offset).find_last_of('.');

		// set base filename
		m_exportBasename = m_exportFilename.substr(0, offset);
	}

	void Config::setSkeletonFilename(const std::string& name) {
		m_skeletonFilename = name;
	}

	void Config::setDefaultMaterialName(const std::string& name) {
		m_defaultMaterialName = name;
	}

	void Config::setTexCoord2D(Tex2D texCoord) {
		m_2DTexCoord = texCoord;
	}

	void Config::setScale(float scale) {
		m_scale = scale;
	}

	void Config::setFPS(float fps) {
		m_fps = fps;
	}

	void Config::setInvertYZ(bool invert)
	{
		m_flipYZ = invert;
	}

	void Config::setInvertNormals(bool invert)
	{
		m_invertNormals = invert;
	}

	void Config::setExportBinaryMesh(bool bExport)
	{
		m_exportBinaryMesh = bExport;
	}

	void Config::setExportXMLMesh(bool bExport)
	{
		m_exportXMLMesh = bExport;
	}

	void Config::setRebuildNormals(bool rebuild)
	{
		m_rebuildNormals = rebuild;
	}

	void Config::setUseSingleSkeleton(bool useSingle)
	{
		m_useSingleSkeleton = useSingle;
	}

	void Config::setExportSkeleton(bool exportSkeleton)
	{
		m_exportSkeleton = exportSkeleton;
	}

	void Config::setExportMultipleFiles(bool exportMultiple)
	{
		m_exportMultipleFiles = exportMultiple;
	}

	void Config::setExportVertexColours(bool exportVC)
	{
		m_exportVertexColors = exportVC;
	}

	void Config::setExportMaterial(bool exportMaterial)
	{
		m_exportMaterial = exportMaterial;
	}

	void Config::setBuildEdgeLists(bool buildEdgeLists)
	{
		m_edgeLists = buildEdgeLists;
	}

	void Config::setGenerateLod(bool generateLod)
	{
		m_generateLod = generateLod;
	}

	void Config::setGenerateTangents(bool generateTangents)
	{
		m_generateTangents = generateTangents;
	}

	void Config::setOptmizeBinaryMesh(bool optimize)
	{
		m_optimizeBinaryLayout = optimize;
	}

	void Config::setVertexColourFormat(VertexColourFormat format)
	{
		m_colourFormat = format;
	}

	void Config::setEndian(Endian endian)
	{
		m_endian = endian;
	}

	void Config::setNumLodLevels(unsigned int levels)
	{
		m_numLodLevels = levels;
	}

	void Config::setLodDistance(float dist)
	{
		m_lodDistance = dist;
	}

	void Config::setLodPercentReduction(float percent)
	{
		m_lodPercent = percent;
	}

	void Config::setLodVertexReduction(int count)
	{
		m_lodVertexCount = count;
	}

	void Config::setExportSelected(bool selected) 
	{
		m_exportSelectedObjects = selected;
	}

	//
	// version 2
	//
	void Config::setMergeMeshes(bool merge)
	{
		m_mergeMeshes = merge;
	}

}